Tinning apparatus.



W. I. HILL. TINNING APPARATUS.

APPLICATION FILED MAK.3,1908. 901,900.

Patented 00c, 20, 1908.

UNITED STATES rirrnn'r OFFICE.

WALTER I. HILL, or oLARKsBUno, wnsr' vIneIrIIi.

TINNING APPARATUS.

To all whom it may concern:

- Be it known that I, WALTER I. HILL, a citizen of the United States of America, residing at Clarksburg, in the county of Harrison and- State of West Virginia, have invented new and useful Improvements in Tinning Apparatus, of which the following is a specification.

This invention relates. to tinning apparat1Is, and t he object. of the invention 18 to providenieans for supplying the oil used in the tinning process to the rolls between which the sheets are passed during the operation of rolling the. coating of tin upon the op Josite surfaces of the sheets.

Vith the above general object in View, the invention consists In the novel construction,

I combination and arrangement hereinafter fully described, illustrated and claimed.

In the accoin anyin drawing,-Figure'l is a view partially in elevation and partially in section, showing the improved apparatus. Fig. 2 is a section taken at right angles to Fig. 1, illustrating the tinning rolls. Fig. 3 is a vertical sectional view of the oil tank, taken on the line 3--3 of Fig. 4, showing the pumpin mechanism. Figiy t is a section through the same taken atright angles to Fig. 3. Fig. 5 is an enlarged longitudinal section through the pump cylinder. Fig. 6 is a longitudinal section through the piston.

Referring to the drawing, and particularly Fig.- 1, 1 and 2 designate the tinning rolls or, in other words, the rolls between which the sheets are passed after they have been treated with the tinning solution, the

said rolls operating to press the coating of tin and roll the same in close contact with the sheets. These rolls are arranged parallel to each other and in very close relation, as shown in Fig. 1, and are mounted in suitable bearings in a receptacle 3 containing the tinning solution, the said rolls beingjournaled at their opposite ends in suitable bearings, as indicated at 4.

Palm oil is generally used in the process of tinning sheet metal, and in order to keep said oil clean-and avoid staining the tinned sheets, it is necessary to keep up a constant supply of fresh oil and furthermore to keep said oil at a certain temperature. It is desirable to apply this clean fresh oil just as the sheets pass between the tinning rolls 1 and 2, and in order to accomplish this I provide at each end of the pair of rolls 1 and 2 nips or guards 5 which fit closely to the ends Specification of Letters Patent- Application filed. him-eh 3, 1908. Serial No. 418,997.

Patented-Oct. 20, 1908.

' of the rolls and are let into rabbets atthe opposite ends of the rolls, which rabbets are formed by reducing the extremities of the rolls, as indicated by dotted lines in Fig. 1. I

In this way a substantially V-shaped trough is formed between the rolls and the nips or guards, so that a constant supply of oil is deposited upon both surfaces of the sheets as they pass through the space between. the rolls. In order to apply this constant flow of oil, I provide at a suit-able distance from the rolls an oil tank 6 which may be oi any desired capacity and from which an oil pipe 7 extends to the receptacle 3- in. which the tinning rolls are mounted.- After entering the receptacle 3 the pipe 7 is carried down ward along the bottom. oi the receptacle and beneath th olls 1 and 9..

About centrally of the length of the rolls 1 and 2 the pipe is provided with an upstanding terminal portion 8, the extremity of which is arched over one of the rolls, as shown at 9, so as to discharge the contents oi": the pipe into the trough formed between the rolls and the nips.

Oil is forced through the pipe 7 to the tinning rolls by means of a pump located with- .in the tank 6 and embodying a pump cylinder 10 in which operates a piston 11. This piston .reciprocates back and forth in the pump cylinder and. is provided with a central longitudinal bore 12 forming a vacuum rehef passage, the same being intern'nttently opened and closed at its inner end by means of a check valve 12, shown in the form of or ordinary flap valve. About midway of the length of the pump cylinder the latter is provided with'an oil inlet port l4: which opens directly into the body of the tank 6, as shown in Fig. 4. At its discharge end the pump cylinder is provided with a check ralrc 15, preferably in the form of a ball. the some being held to its seat by means oi a spring 16. The pump cylinder also p aided with a coupling or union 1'? to which. the ad jacent end of the pipe 7 connected.

The piston 11 has mnnectcd tl'iereto one arm 18 of a. rock shaft 19 journaled in suitable hearings in the tank 6 and having the other arm 20 thereof adjustably connected to a rod 21 which is connected to an eccentric strap 22 embracing an eccentric on the shaft 245 of a spur gear wheel 25 which. meshes with and is riven by a pinion 9.6 on a shaft 27 which leads outward through one side of tho-tank, where it is provided with a llt ulley 28 to which power may be delivered idy a suitable driving belt 29 extending to a motor of any description. The arm 20 of the rock shaft 19 is provided with a longitudinal series of holes, as shown in Fig. 4, so that the adjacent end of the rod 21 may be adjusted toward and away from the shaft 19 for the purpose of increasing or decreasing the stroke of the piston 11. and consequently the rapidity of feed of the oil to the tinning rolls.

In making tin plate, the sheet has to be run through the metal and up through the rolls which act to ress the metal on to the sheet. In the ordinary construction of apv ically and with any desired rapidity to the uppermost tinning rolls and acts to keep the surfaces of the tinned sheets clean and bright. In actual practice it has been found that a very great saving in oil is effected as rolls and adapted to dischar e oil into the space between the rolls.

2. The combination with tinning rolls hav ing rabbeted ends, of nips or guards, means for yieldingly holding said nips into engagement with the rabbeted ends of the rolls, and

a force-feed oil pipe arranged to discharge into the pocket formed by the rolls and nips. In testimony whereof I aflix my signature inpresence of two Witnesses. WALTER I. HILL.

Witnesses:

HARRY GARDNER, HAZE MORGAN. 

